|
Supplemental Disclosures of Cash Flows Information (Details) (USD $)
|
6 Months Ended | |
|---|---|---|
|
Jun. 30, 2012
|
Jun. 30, 2011
|
|
| Supplemental Cash Flow Elements [Abstract] | ||
| Stock-based compensation accrual impact, net | $ (12,474) | $ (10,021) |
| Change in unrealized gain on available-for-sale securities | 18,502 | |
| Transfer of investment in leased property to inventory | 263,239 | |
| Transfer of assets held for sale to inventory | $ 1,000,000 | |